Safety airplane



July 14, 1931. M. CHEETHAM SAFETY AIRPLANE Filed Oct. 14. 1929 'g ig/realm BY WM A TTORNE Y.

Patented July 14, 1931 i starts MARGARET QHEETHAM, OEYOUNGSTOWN; onio SAFETY arti s Applicationfiled October 14, 19 29. SerialNb. 399 ,5455.

. a folded position above a regularly equipped wing or wings and in a general position, parallel to saidregular wings.

Another object of the invention is to provide flexible cables to hold the auxiliary Wings in a proper position when opened.

With the foregoing and other objects, in view which will appear as the description proceeds, the invention resides inthe combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein F igurel is a partial top plan view of the device.

Figure 2 is a side elevation of the device. Figure 3 is a. section taken on line 3-3 of v Fig. 2. I

By referring to the drawings it will'be seen that there is provided a body 1. This body 1 is provided with'regular equipped wings 2 and 8. In order to provide sufficient sup-' port means for the auxiliary folding wings,

' I have provided perpendicular support members 4, 5, 6, and 7. These support members are located and secured'in'reference to the body 1 in a central portion and in alinement with each other. Attached to the upper end of each of said support members there is provideda central rod 8, to which that the airplane is equipped with a similar Wing equipmenton the other side, so that is attached in a-hingedmanner, a plurality" the auxiliary wings m y be folded. a s

with the rod lOahead, due to the hinge connections atpoints 11 andl2. i By referring to Fig. 3it'will be seen that one] of "the auxiliary wings is folded while the other wingis shown opened. In order to provide a sufiicient support for the auxiliary wings when'they are opened there is provided a cable 13, which is attached to an outer edge of the auxiliary wings at a point 14L and to the body at a point 15. By

referring to Fig. 2 it will be seen that there is a rear cable 16 attached to the securing rod 10at a point 17 and to the body 1 of the airplane at point 18. It is obvious that these cables 13 and 16 may be held under tension by any suitable means so that the same is always under tension when opened or closed. v I Securedto. the securingrod 10 there is provided a flexible covering 19. This is secured by means of stitches 20 to outer perimeter of the auxiliary wings. In order to keep the flexible covering 19 from bagging there is provided a plurality of reinforcing cords 21' which are secured to the securing rod 10 at points 22.

In order to hold the auxiliary wings in a folded position there is provided a catch 23 at an extreme front end 24: ofthe securing rod 10. There is provided a releasing cord 25ufor the purpose of releasing the catch 23 when it is desired to open the wings. In

order that thewings may swing open there -'is provided a 'curved spring 26' which is se cured to the front arm member 9 so that when the catch 28 is released, the curved spring 26 starts to open thewings which is completed by the force and friction of the air as the plane moves ahead. It will also be seen that'there is provided a cable .27 which is secured to the central rod 8 at a' point 28 and a point 29 on the securing rod 10, for the purpose of holding the wing in a desired open position.

What I claim is 1. In a device of the class described, a pair of folding auxiliary wings, said wings provided With a central rod, a plurality of us ats for said central r921, a p urality Qt When being folded the arms 9 swing I I arm members attached to said central rod, outer ends of said plurality of arms hinged to an outer securing rod, a flexible covering for said Wings, a plurality of reinforcing cords positioned above said covering of Wings, means which holds said auxiliary Wings in a folded position, a spring means for starting the opening of said Wings, substantially as described. p 2. In a device of the class described, a plurality of perpendicular support members in alinement With each other and positioned centrally With reference to an airplane body, a pair of auxiliary Wings secured to said support, means for folding said'wings and means of releasing said Wings from a folded position in order that they may swing and be held in a open secured position, substantially as described. In testimony whereof I aflix my signature.

MARGARET CHEETHAM. 

